Large-diameter high-pressure pipe assembly buckling and pressing connector

Abstract

The utility model discloses a large-caliber high-pressure pipe assembly buckling and pressing connector which comprises a connecting rod core which is a metal rod of a hollow structure, and a plurality of annular pressing grooves are formed in the outer side of the connecting rod core at equal intervals. The reinforcing pieces are arranged in the connecting rod core at equal intervals and used for enhancing the overall strength of the connecting rod core; the utility model has the beneficial effects that through the arrangement of the limiting teeth and the reset spring, the limiting facility can prevent the connecting nut from loosening or falling off in a pressure or vibration environment, so that the reliability and the use safety of the joint are improved; the reinforcing pieces are evenly arranged in the connecting rod core, the bearing capacity of the rod core can be remarkably improved, deformation of the connecting rod core under the action of pressure or external force can be effectively prevented or reduced by adding the reinforcing pieces, and the stability of the connecting rod core in function and structure is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of crimping joints, in particular to a crimping joint for a large-diameter high-pressure pipe assembly. Background Art

[0002] Large-diameter high-pressure pipe assembly crimping joints are a pipeline connection solution specifically used for high-pressure fluid transmission systems. This type of joint is mainly used in the oil, natural gas, water treatment, chemical and other industries to connect large-diameter high-pressure pipelines. The crimping joint connects the pipeline through a mechanical compression mechanism. One end of the pipe is inserted into the crimping part of the joint, and then the joint is compressed by a special crimping tool to form a solid mechanical connection.

[0003] Most of the existing crimping joints are composed of metal tubes and corresponding anti-slip grooves on the outside, but the existing joints do not have corresponding reinforcements, cannot effectively prevent or reduce their deformation under pressure or external force, and do not have corresponding anti-slip mechanisms. The connecting nuts will loosen or fall off under pressure or vibration environments. Utility Model Content

[0004] The utility model aims to provide a large-diameter high-pressure pipe assembly crimping joint to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above purpose, the utility model provides the following technical solution: a large-diameter high-pressure pipe assembly crimping joint, comprising:

[0006] The connecting rod core is a metal rod with a hollow structure, and a plurality of annular pressing grooves are equidistantly arranged on the outer side of the connecting rod core;

[0007] Reinforcement members, which are equidistantly arranged inside the connecting rod core to enhance the overall strength of the connecting rod core;

[0008] A press-fit sleeve, which is placed outside the connecting rod core;

[0009] A bent pipe is placed on the top of the connecting rod core, one end of the bent pipe is rotatably connected to a connecting nut, one end of the connecting nut is provided with a limiting assembly, and the limiting assembly has a limiting tooth for limiting and a reset spring for driving the limiting tooth to reset.

[0010] Preferably, a positioning baffle and a limiting ring are provided at the end of the connecting rod core, and a limiting groove is formed between the positioning baffle and the limiting ring.

[0011] Preferably, the reinforcement is a metal plate with a right-angled triangle structure.

[0012] Preferably, annular pressing bosses are fixedly connected at equal intervals inside the pressing sleeve.

[0013] Preferably, the limiting assembly further comprises a fixing plate fixedly connected to the outer side of the bent pipe, and a sliding rod is slidably connected to the middle portion of the fixing plate.

[0014] Preferably, one end of the sliding rod is fixedly connected to a sliding limit plate, the sliding limit plate is slidingly connected to the bent pipe, the limiting tooth is fixed to one side of the sliding limit plate, and the return spring is located between the fixed plate and the sliding limit plate.

[0015] Preferably, a limiting hole for use with the limiting teeth is provided on one side of the connecting nut.

[0016] Compared with the prior art, the beneficial effects of the utility model are as follows: through the cooperation between the annular pressing groove and the pressing sleeve, the joint is tightly connected during the crimping process, the friction at the connection is increased, the stability is increased, and the pipe is prevented from being detached under force; by setting the limiting teeth and the reset spring, the limiting facility can prevent the connecting nut from loosening or falling off under pressure or vibration environment, thereby increasing the reliability and safety of use of the joint, and by evenly arranging reinforcements inside the connecting rod core, the bearing capacity of the rod core can be significantly improved, and by adding reinforcements, its deformation under pressure or external force can be effectively prevented or reduced, thereby ensuring the functional and structural stability of the connecting rod core. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the internal structure of the connecting rod core of the utility model;

[0019] Figure 3 It is a structural schematic diagram of the connection nut of the utility model;

[0020] Figure 4 This is a schematic diagram of the limit tooth structure of the utility model.

[0021] In the figure: 1. bent pipe; 2. positioning baffle; 3. limiting groove; 4. limiting ring; 5. connecting rod core; 6. annular pressing groove; 7. pressing sleeve; 8. annular pressing boss; 9. fixing plate; 10. sliding rod; 11. sliding limiting plate; 12. connecting nut; 13. reset spring; 14. limiting hole; 15. reinforcement; 16. limiting tooth. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1 , 2 As shown in Figures 3 and 4, the utility model provides a technical solution: a large-diameter high-pressure pipe assembly crimping joint, comprising: a connecting rod core 5 made of stainless steel or high-strength alloy, the connecting rod core 5 is a metal rod with a hollow structure, and a plurality of annular pressing grooves 6 are equidistantly opened on the outside of the connecting rod core 5; a reinforcing member 15 is equidistantly fixed to the inside of the connecting rod core 5 to enhance the overall strength of the connecting rod core 5; a pressing sleeve 7 is placed on the outside of the connecting rod core 5; a bent pipe 1 is fixed to the top of the connecting rod core 5, and the diameter and axis of the bottom of the bent pipe 1 are the same as those of the connecting rod core 5, one end of the bent pipe 1 is rotatably connected to a connecting nut 12, and a limiting component is provided at one end of the connecting nut 12, and the limiting component has a limiting tooth 16 for limiting and a reset spring 13 for driving the limiting tooth 16 to reset.

[0024] It should be noted that the utility model selects a suitable pipe, cuts the pipe as needed, cleans the pipe and the joint, sleeves the pressing sleeve 7 on the outside of the pipe, sleeves the pipe on the outside of the connecting rod core 5, selects a suitable mold according to the size of the joint and the pipe, and adjusts the pressure setting of the crimping machine, places the pipe and the joint in the crimping machine, and performs the crimping operation after ensuring the correct position. During the pressurization process, the pressing sleeve 7 is deformed by force, and cooperates with the annular pressing groove 6 to squeeze and fix the pipe on the outside of the connecting rod core 5. When the connecting nut 12 at the other end is connected to the joint, the connecting nut 12 is rotated, wherein one end of the limiting tooth 16 is a bevel structure, which ensures that it can rotate normally when connected to the structure. When the connecting nut 12 is rotated , the limiting teeth 16 are squeezed backwards, so that the sliding limiting plate 11 compresses the reset spring 13. When the limiting teeth 16 correspond to the position of the limiting holes 14, the reset spring 13 pushes the sliding limiting plate 11 to one side, so that the limiting teeth 16 are inserted into the limiting holes 14, preventing the connecting nut 12 from reversing and causing separation. Through the cooperation of the annular pressing groove and the pressing sleeve, the joint is tightly connected during the crimping process, increasing the friction at the connection, increasing its stability, and preventing the pipe from being separated by force; by evenly arranging reinforcements inside the connecting rod core, the bearing capacity of the rod core can be significantly improved. By adding reinforcements, its deformation under pressure or external force can be effectively prevented or reduced, ensuring the functional and structural stability of the connecting rod core.

[0025] See also Figure 1 ,2 As shown, a positioning baffle 2 and a limiting ring 4 are provided at the end of the connecting rod core 5, a limiting groove 3 is formed between the positioning baffle 2 and the limiting ring 4, and an annular pressing boss 8 is fixedly connected to the inside of the pressing sleeve 7 at equal distances.

[0026] It should be noted that the utility model enables the annular pressing groove 6 on the outside of the connecting rod core 5 to press the annular pressing boss 8 to compress and prevent the pipe therebetween, and can effectively prevent the pipe from falling off or shifting when subjected to pressure or mechanical vibration.

[0027] See also Figure 2 As shown, the reinforcement member 15 is a metal plate in a right-angled triangle structure.

[0028] It should be noted that the bottom right-angled side of the reinforcement member 15 of the utility model is fitted and fixed to the inner wall of the connecting rod core 5, and the right-angled triangle reinforcement member is fixed at equal distances inside the connecting rod core, which can effectively increase the bending and torsion resistance of the connecting rod. Since the triangle is one of the shapes with extremely high stability in nature, this layout helps to evenly disperse the stress generated by external forces and reduce possible deformation.

[0029] See also Figure 2 , 4 As shown, the limiting assembly further includes a fixing plate 9 fixedly connected to the outer side of the elbow 1 , and a sliding rod 10 is slidably connected to the middle of the fixing plate 9 .

[0030] It should be noted that the sliding rod 10 of the utility model is slidably connected to the fixed plate 9, so that the sliding limit plate 11 can only move toward the fixed plate when the reset spring 13 is compressed to prevent its angle from rotating, so that the limit tooth 16 can only move laterally to interlock with the limit hole 14.

[0031] See also Figure 1 , 2 As shown in 4, one end of the sliding rod 10 is fixedly connected to a sliding limit plate 11, the sliding limit plate 11 is slidingly connected to the bent pipe 1, the limit tooth 16 is fixedly connected to one side of the sliding limit plate 11, and the return spring 13 is located between the fixed plate 9 and the sliding limit plate 11, and one side of the connecting nut 12 is provided with a limit hole 14 used in conjunction with the limit tooth 16.

[0032] It should be noted that, according to the utility model, when the connecting nut 12 is connected to the connector, the connecting nut 12 is rotated in the direction of tightening, and the connecting nut 12 squeezes the limiting tooth 16 under the action of the inclined surface of the limiting tooth 16, so that the sliding limiting plate 11 is driven to compress the reset spring 13 along the direction of the sliding rod 10. When the position of the limiting tooth 16 corresponds to the position of the limiting hole 14, the limiting tooth 16 is inserted into the limiting hole 14, and the cycle is maintained to prevent the reverse rotation, so as to prevent the connecting nut from loosening or falling off under pressure or vibration environment, thereby increasing the reliability and safety of the joint.

[0033] In the description of the present invention, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inside", "front", "center", "both ends" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0034] In addition, the terms "first", "second", "third" and "fourth" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first", "second", "third" and "fourth" may explicitly or implicitly include at least one of such features.

[0035] In the present utility model, unless otherwise clearly stipulated and limited, the terms such as "installation", "setting", "connection", "fixation" and "screw-on" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the utility model according to the specific circumstances.

[0036] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A large-diameter high-pressure pipe assembly crimping joint, characterized in that: include: A connecting rod core (5), the connecting rod core (5) is a metal rod with a hollow structure, and a plurality of annular pressing grooves (6) are equidistantly arranged on the outer side of the connecting rod core (5); Reinforcement members (15), the reinforcement members (15) are equidistantly arranged inside the connecting rod core (5) to enhance the overall strength of the connecting rod core (5); A press-fit sleeve (7), the press-fit sleeve (7) being placed on the outside of the connecting rod core (5); A bent pipe (1), the bent pipe (1) is placed on the top of the connecting rod core (5), one end of the bent pipe (1) is rotatably connected to a connecting nut (12), one end of the connecting nut (12) is provided with a limiting assembly, and the limiting assembly has a limiting tooth (16) for limiting and a reset spring (13) for driving the limiting tooth (16) to reset.

2. The large-diameter high-pressure pipe assembly crimping joint according to claim 1, characterized in that: The end of the connecting rod core (5) is provided with a positioning baffle (2) and a limiting ring (4), and a limiting groove (3) is formed between the positioning baffle (2) and the limiting ring (4).

3. The large-diameter high-pressure pipe assembly crimping joint according to claim 1, characterized in that: The reinforcement member (15) is a metal plate with a right-angled triangle structure.

4. The large-diameter high-pressure pipe assembly crimping joint according to claim 1, characterized in that: Annular pressing bosses (8) are fixedly connected at equal intervals inside the pressing sleeve (7).

5. The large-diameter high-pressure pipe assembly crimping joint according to claim 1, characterized in that: The limiting assembly also includes a fixing plate (9) fixedly connected to the outside of the bent pipe (1), and a sliding rod (10) is slidably connected to the middle of the fixing plate (9).

6. The large-diameter high-pressure pipe assembly crimping joint according to claim 5, characterized in that: One end of the sliding rod (10) is fixedly connected to a sliding limit plate (11), the sliding limit plate (11) is slidingly connected to the bent pipe (1), the limit tooth (16) is fixedly connected to one side of the sliding limit plate (11), and the return spring (13) is located between the fixed plate (9) and the sliding limit plate (11).

7. The large-diameter high-pressure pipe assembly crimping joint according to claim 6, characterized in that: One side of the connecting nut (12) is provided with a limiting hole (14) for use with the limiting teeth (16).

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